Maintenance
6-2
TDS 420A, TDS 430A & TDS 460A Service Manual
H Chapter 5, Adjustment Procedures, addresses after repair adjustment and the
interval between periodic adjustments. It contains a procedure for adjusting
the internal circuits of the oscilloscope.
H Chapter 9, Diagrams, contains a block diagram using individual modules as
blocks and an interconnection diagram showing connections between the
modules.
H Chapter 10, Mechanical Parts List, lists all field replaceable modules by part
number.
Preparation
This section gives general information on preventing damage to internal modules
when doing maintenance.
CAUTION. Static discharge can damage any semiconductor component in this
oscilloscope.
When performing any service which requires internal access to the oscilloscope,
adhere to the following precautions to avoid damaging internal modules and their
components due to electrostatic discharge (ESD).
1. Minimize handling of static-sensitive modules.
2. Transport and store static-sensitive modules in their static protected
containers. Label any package that contains static-sensitive modules.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Do service of static-sensitive
modules only at a static-free work station.
4. Do not remove the oscilloscope cabinet unless you have met precaution
number 3, above. Consider all internal modules static-sensitive.
5. Nothing capable of generating or holding a static charge should be allowed
on the work station surface.
6. Handle circuit boards by their edges when possible.
7. Do not slide the modules over any surface.
8. Avoid handling modules in areas that have a floor or work-surface covering
capable of generating a static charge.
9. Do not use high-velocity compressed air when cleaning dust from modules.
Preventing ESD
To Next Page
Loading...
Need help?
General
